This is information on a product in full production. The product is the STA529 FFX™ audio codec, which features analog and digital inputs and a 2 x 1.2 W (or 2 x 100 mW HP) class-D amplifier. It has a dynamic range of up to 96 dB, sample rates from 8 kHz to 192 kHz, a FFX™ class-D driver, and digital and analog power supplies. Other features include 18-bit audio processing, a >90-dB SNR analog-to-digital converter, and various output power options for headphones and speakers.
The STA529 is a digital stereo class-D audio amplifier featuring an on-chip audio DSP and a high-efficiency class-D driver. It is designed for portable applications such as laptops and digital cameras, offering up to 96 dB dynamic range and sample rates from 8 kHz to 192 kHz. The device supports both digital-to-power-audio conversion and direct conversion modes without external LC filters or heatsinks.
The document provides comprehensive technical details including connection diagrams for TFBGA48 and VFQFPN52 packages, electrical and thermal specifications, PLL configuration, digital processing flow, and I2C interface descriptions. It also includes register summaries and package mechanical data.
| Dynamic range | Up to 96 dB |
|---|---|
| Sample rates | 8 kHz to 192 kHz |
| Digital power supply | 1.55 V to 1.95 V |
| Analog power supply | 1.80 V to 3.60 V |
| ADC resolution | 16-bit |
| ADC SNR | >90-dB |
| Efficiency | 90% |
| Output power (4-ohm speakers) | 1.1 W |
| Output power (32-ohm headphones) | 45 mW |
| Operating temperature range | -40 to 85 °C |
The PWM amplifier achieves greater than 90% efficiency for longer battery life.
No, the innovative class-D modulation allows the STA529 to work without external LC filters and without a heatsink.
The STA529 is available in TFBGA48 and VFQFPN52 packages.